While reading the part where he gets into details about passion, I felt like the author uses "passion" as a substitute for "excitement". For instance: "I've b

While reading the part where he gets into details about passion, I felt like the author uses "passion" as a substitute for "excitement". For instance: "I've been involved in several dozen business ventures over the course of my life, and each one made me excited at the start. You might even call it passion. The ones that didn't work out—and that would be most of them—slowly drained my passion as they failed." I believe passion just exists. It cannot be drained. You either have or you don't. Now of course, you can discover it, after all you cannot be passionate about things you haven't experienced, but once discovered I don't believe passion can be lost. Granted though, "passion" and "enthusiasm" are synonyms, so the distinction is slightly tricky.